Ratchet-wrench.



PATBNTEDDBC. 22, 1903. G. HANSEN.

RATCHEI" WRENCH.

APPLIOATION FILBD IAB. 25. 19'03.'

ATTORNEYS UNITED STATES Patented December 22, 1903.

GEORGE HANSEN, OF YORK, N. Y.

RATCHET-WRENCH.

SPECIFICATION forming part of Letters Patent No. 747,419, dated December 22, 1903.

Application inea March 25,1903. serian@ 149.422. nummern To @ZZ whom t may concern,.-

Be it known that I, GEORGE HANSEN, acitizen ofv the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Ratchet-VVrenches,-

The invention is fully disclosed in the following specification, of which the accompanying drawings form a part, in which the separate parts of my improvement are designated by suitable reference characters in each of the views, andin which- Figure. l is a side view of my improved wrench; Fig. 2, a section on the line 242 of Fig. l; Fig. 3, a section on the line 3 3 of Fig. 2; Fig. 4, a section on-the line 4 tof Fig. 3, and Fig. 5 a perspective View of the detail -of the construction.

In the practice of my invention I provide a handle-piece a, which is provided at one end with two parallel plates or jaws a2 and a3, and in the following description the plate or jaw a3 for convenience will be called the bottom plate or jaw,rwhile the plate or jaw a2 will be called the top plate or jaw, and between said plates or jaws is placed a ratchetwheel b,provided With a central angular opening b2 and with the usual ratchet-teeth b3. The top plate or jaw 0,2 is provided with a circular opening a4 and the bottom plate or jaw a3 with a larger circular opening a5. I also provide a screw c, having a large circular journal member c2, which is adapted to fit in the opening a5 in the bottom plate or jaw and above which is an angular member c3, adapted to fit in the angular opening b2 in the ratchet -wheel b, and above this Vis a smaller circular journal member c4, which is adapted to fit in the circular opening d4 in the top plate or jaw a?, and a screw o5 is screwed i into the journal member c4.

Screwed onto the screw c and secured thereof by a lock-screw d is a boX member e, composed of a top plate e2, two side plates e3, and

an end member e4, provided with a stationary jawf, which is adjacent to the handle a, and

the opposite end of the box member e is openl ksurface with inwardly-directed members h4,

which limit the outward movement of the jaw g, and a screw 2' is also provided, one end vof which passes through the movable jaw g and the other end of which is provided with.

,a cylindrical member #,which passes through the stationary jawf or the end piece e4 o f the box member e and is provided with a nut In placing the screw i in position the plate h must be removed and the movable jaw g screwed onto said screw fi, after which the icylindrical member 2'2 of said screw is passed vthrough the'end memberc4of the box member e, and the plat-e h is then secured in position and the nut 213 is screwed onto the part 2'2 of the screw 12, and by turning the screw 2l by means of the nut i3, which serves'as a head or' handle for this purpose, the position ofthe jaw g may be regulated, or said jaw may be adjusted toward and from the jawf, as will be readily understood.

Any suitable device may be substituted for Vwhich passes into a socket or recess la in the handle a, and in which is placed a spring k2, which bears von the plate j and normally serves to force itin the direction of the ratchet-wheel b. Pivoted between the oppo site ends of said plate and said'ratchet-wheel, as shown at o, are two similar dogs m and n, which are provided, respectively, with anvinwardly-directed lug or projection m2 and n2 and with an outwardly-curved finger m3 and n3, and the pivoted ends of said dogs are provided with two plane surfaces or sides 'm4 and IOO 'm5 and n4 and ns, respectivelyLon which in certain positions of said dogs the platej is adapted to bear, as shown in Fig. 2, and these surfaces or faces on the respective dogs are at right angles to each other.

The adjustment of the movable jaw g as hereinbefore described in the operation of this part of the wrench will be the same as with other devices of this class, and when it is desired to use the wrench as an ordinary wrench the dogs m and n are held in the position shown in full lines in Fig. 2 by the plate j, and said wrench may be operated in the manner of an ordinary wrench or of an ordinary monkey-wrench; but when it is desired to use the device as a ratchet-wrench one of the dogs is turned outwardly, as shown in dotted lines at the bottom of Fig. 2, while the other dog is left in operative position or in the position shown in full lines in Fig. 2.

It will be observed that the movable jaw g is provided at its opposite sides with longitudinal tongues g2, wich t in corresponding grooves in the sides e3 of the box member e, and the form of these tongues and grooves is such that the dog g can only move longitudinally of the box member. It will also be observed that the device consisting of the screw c and the parts c2, c3, and c4 constitute a journal which is revolubly mounted in the plates or jaws a2 and as and with which the ratchet-wheel b is connected, and the screw or projecting portion c thereof forms simply a connection for the box member e, and this connection may be made of other form, if desired.

My improved wrench is simple in construction and operation and cannot easily get out of order, and it may be used whenever devices of this class are required, and changes in and modifications of the construction described maybe made without departing from the spirit of my invention or sacrificing its advantages.

Having fully described my invention, what Iclaim as new, and desire to secure by Letters Patent, is-

A wrench comprising a handle provided at one end with parallel jaws, a ratchet-wheel mounted between said jaws, two dogs pivoted at the opposite sides of said jaws and bet'ween the ratchet-wheel and the handle and adapted to operate in connection with said wheel, means for holding said dogs in or out of engagement with said wheel, a journal passing through said jaws and on which said wheel is secured, one end of said journal being projected, an oblong box member secured to the projecting end of the journal and provided at one end with a stationary jaw and at the opposite end with a removable member, a movable jaw mounted in the box member adjacent to the removable end member, and a screw mounted in said box member and on which the movablejaw is mounted, and one end of which is cylindricalin form and passes through the end of the box member with which the stationary jaw is connected, substantially as shown and described.

In testimony that I claim the foregoing as my invention l have signed my name, in presence of the subscribing witnesses, this 23d day of March, 1903.

GEORGE HANSEN.

Witnesses:

J. C. LARsEN, F. A. STEWART. 

